De Sitter group and relativistic wave equationsLoide, Rein-Karl; Ots, I.; Saar, R.Hadronic journal1997 / p. 503-521

Dynamical Poincare algebras and higher spin interaction theorySaar, R.; Ots, I.; Loide, Rein-Karl; Vili, R.Hadronic journal1997 / p. 559-574

Higher-spin equations with variable mass and spin and causalityLoide, Rein-Karl; Ots, Ilmar; Saar, Rein; Liivat, H.Hadronic journal2003 / p. 193-202

On superfield equations of motionsLoide, Rein-Karl; Ots, Ilmar; Saar, Rein; Suurvarik, PavelHadronic journal2004 / p. 151-163

Poincare' realizations and wave equationsLoide, Rein-Karl; Ots, I.; Saar, R.Hadronic journal1994 / 6, p. 565-583